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Software estimation is needed at a very early stage and thus estimation using software size is a formidable task.....
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a. Line of Code(LOC) b. Function Points c. Feature Points........
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Impact of reused software components upon the size estimate - Project management (PMP)
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Line of code is a metric used to measure the size of software for estimation mainly by counting the number of lines needs to be written in the source code......
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a. Each counted line must contain only one source statement. b. Count all delivered executable statements.....
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a. Widely used and accepted. b. Allows the comparison of size & productivity across development groups...
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a. Difficult to measure LOC in the early stages of a new product. b. Source instructions vary with coding languages, design methods and with programmer’s ability..
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Function point is software metric used to measure the functions that software must provide to the user.....
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a. Count number of functions in each category. b. Apply complexity weight factors. c. Apply Environmental factors.......
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a. It can be applied early in the software development life cycle. b. It is independent of the programming language, technology, techniques.....
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a. It needs subjective evaluations with a lot of judgment involved. b. Many effort and cost models are based on LOC, so function points need to be converted.....
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Feature points are not commonly used as a software estimating technique anymore. The approach was described for certain types of functionality by IFPUG method....
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a. Count feature points b. Continue the feature point count by counting the number of algorithms c. Weigh complexity....
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It is an excellent approach to be used in size estimation of algorithmically intensive systems......
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The main disadvantage is the subjective classification of algorithmic complexity....
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Blitz modeling is an approach for software estimation which uses number of classes and number of programs per class as software metric...
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Advantages of Blitz modeling: a) Estimation improves with every phase b) Uses data from past projects and hence is more accurate and predictable.....
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Disadvantages of Blitz modeling: a) Needs structured methodologies to be used b) Estimation cannot occur till complete design is ready...
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Wideband Delphi is a very popular and simple technique for estimating software’s size and effort. It uses a group consensus approach and thus uses a lot of people’s experience for software estimation....
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a. Implementation is easy and inexpensive. b. It uses expertise of various people......
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a. Difficult to repeat again and again with different group of experts. b. You can possibly reach consensus on incorrect estimate......
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